What is the mole fraction of KCI in a mixture of 0.564 g NaCl, 1.52 g KCI,
and 0.857 g Lici?
Molar Mass
NaCl: 58.44 g/mol
KCI: 74.55 g/mol
Lici: 42.39 g/mol

the atomic mass is the bottom number on the element.

-steel jelly

c (diamond),

sio2 (quartz)

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.